This modification of the surface of the materials subject-matter of the carbons by reduction of diazonium salts, in particular of carbon fibers for composite materials, materials carbons thus modified.

摘要

Process for modyfying the surface of carbon-containing materials by electrochemical reduction of diazonium salts, applicable in particular to carbon fibres for composite materials, and carbon-containing materials so modified. According to the process, the carbon-containing material is used as a cathode (3) in an electrolysis unit containing a diazonium salt solution ArN2x- (2) in an aprotic solvent and by electrochemical reduction to a suitable potential, the aromatic group (Ar) is bound to the carbon-containing material. Any aromatic group can be bound in this way to the carbon-containing material, for instance C6H4NO2, C6H4NH2, C6H4COOH, and then reacted with suitable compounds.